This patch retrieves and configures the vbus control gpio via the device tree. The suspend/resume callbacks will be later modified for vbus control.
Signed-off-by: Abhilash Kesavan <[email protected]> Signed-off-by: Vivek Gautam <[email protected]> --- drivers/usb/dwc3/dwc3-exynos.c | 25 +++++++++++++++++++++++++ 1 files changed, 25 insertions(+), 0 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c index a293c69..9b0238f 100644 --- a/drivers/usb/dwc3/dwc3-exynos.c +++ b/drivers/usb/dwc3/dwc3-exynos.c @@ -20,6 +20,7 @@ #include <linux/dma-mapping.h> #include <linux/clk.h> #include <linux/of.h> +#include <linux/of_gpio.h> #include "core.h" @@ -30,6 +31,28 @@ struct dwc3_exynos { struct clk *clk; }; +static int dwc3_setup_vbus_gpio(struct platform_device *pdev) +{ + int err; + int gpio; + + if (!pdev->dev.of_node) + return 0; + + gpio = of_get_named_gpio(pdev->dev.of_node, + "samsung,vbus-gpio", 0); + if (!gpio_is_valid(gpio)) + return 0; + + err = gpio_request_one(gpio, GPIOF_OUT_INIT_HIGH, "dwc3_vbus_gpio"); + if (err) { + dev_err(&pdev->dev, "can't request dwc3 vbus gpio %d", gpio); + return err; + } + + return err; +} + static u64 dwc3_exynos_dma_mask = DMA_BIT_MASK(32); static int __devinit dwc3_exynos_probe(struct platform_device *pdev) @@ -58,6 +81,8 @@ static int __devinit dwc3_exynos_probe(struct platform_device *pdev) if (!pdev->dev.coherent_dma_mask) pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32); + dwc3_setup_vbus_gpio(pdev); + platform_set_drvdata(pdev, exynos); devid = dwc3_get_device_id(); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
